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7SequenceFileInputFormat (Hadoop 0.20.1 API)
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91org.apache.hadoop.mapreduce.lib.input</FONT>
92<BR>
93Class SequenceFileInputFormat&lt;K,V&gt;</H2>
94<PRE>
95<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
96  <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.InputFormat</A>&lt;K,V&gt;
97      <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">org.apache.hadoop.mapreduce.lib.input.FileInputFormat</A>&lt;K,V&gt;
98          <IMG SRC="../../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.hadoop.mapreduce.lib.input.SequenceFileInputFormat&lt;K,V&gt;</B>
99</PRE>
100<HR>
101<DL>
102<DT><PRE>public class <B>SequenceFileInputFormat&lt;K,V&gt;</B><DT>extends <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A>&lt;K,V&gt;</DL>
103</PRE>
104
105<P>
106An <A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce"><CODE>InputFormat</CODE></A> for <A HREF="../../../../../../org/apache/hadoop/io/SequenceFile.html" title="class in org.apache.hadoop.io"><CODE>SequenceFile</CODE></A>s.
107<P>
108
109<P>
110<HR>
111
112<P>
113
114<!-- ======== CONSTRUCTOR SUMMARY ======== -->
115
116<A NAME="constructor_summary"><!-- --></A>
117<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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119<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
120<B>Constructor Summary</B></FONT></TH>
121</TR>
122<TR BGCOLOR="white" CLASS="TableRowColor">
123<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html#SequenceFileInputFormat()">SequenceFileInputFormat</A></B>()</CODE>
124
125<BR>
126&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
127</TR>
128</TABLE>
129&nbsp;
130<!-- ========== METHOD SUMMARY =========== -->
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135<TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2">
136<B>Method Summary</B></FONT></TH>
137</TR>
138<TR BGCOLOR="white" CLASS="TableRowColor">
139<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
140<CODE>&nbsp;<A HREF="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">K</A>,<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">V</A>&gt;</CODE></FONT></TD>
141<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html#createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">createRecordReader</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</A>&nbsp;split,
142                   <A HREF="../../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;context)</CODE>
143
144<BR>
145&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Create a record reader for a given split.</TD>
146</TR>
147<TR BGCOLOR="white" CLASS="TableRowColor">
148<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
149<CODE>protected &nbsp;long</CODE></FONT></TD>
150<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html#getFormatMinSplitSize()">getFormatMinSplitSize</A></B>()</CODE>
151
152<BR>
153&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Get the lower bound on split size imposed by the format.</TD>
154</TR>
155<TR BGCOLOR="white" CLASS="TableRowColor">
156<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
157<CODE>protected &nbsp;<A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="../../../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</A>&gt;</CODE></FONT></TD>
158<TD><CODE><B><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html#listStatus(org.apache.hadoop.mapreduce.JobContext)">listStatus</A></B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)</CODE>
159
160<BR>
161&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;List input directories.</TD>
162</TR>
163</TABLE>
164&nbsp;<A NAME="methods_inherited_from_class_org.apache.hadoop.mapreduce.lib.input.FileInputFormat"><!-- --></A>
165<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
166<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
167<TH ALIGN="left"><B>Methods inherited from class org.apache.hadoop.mapreduce.lib.input.<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A></B></TH>
168</TR>
169<TR BGCOLOR="white" CLASS="TableRowColor">
170<TD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPath(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path)">addInputPath</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#addInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">addInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#computeSplitSize(long, long, long)">computeSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getBlockIndex(org.apache.hadoop.fs.BlockLocation[], long)">getBlockIndex</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPathFilter(org.apache.hadoop.mapreduce.JobContext)">getInputPathFilter</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getInputPaths(org.apache.hadoop.mapreduce.JobContext)">getInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMaxSplitSize(org.apache.hadoop.mapreduce.JobContext)">getMaxSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getMinSplitSize(org.apache.hadoop.mapreduce.JobContext)">getMinSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getSplits(org.apache.hadoop.mapreduce.JobContext)">getSplits</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#isSplitable(org.apache.hadoop.mapreduce.JobContext, org.apache.hadoop.fs.Path)">isSplitable</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPathFilter(org.apache.hadoop.mapreduce.Job, java.lang.Class)">setInputPathFilter</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, org.apache.hadoop.fs.Path...)">setInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setInputPaths(org.apache.hadoop.mapreduce.Job, java.lang.String)">setInputPaths</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMaxInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMaxInputSplitSize</A>, <A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#setMinInputSplitSize(org.apache.hadoop.mapreduce.Job, long)">setMinInputSplitSize</A></CODE></TD>
171</TR>
172</TABLE>
173&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
174<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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176<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
177</TR>
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180</TR>
181</TABLE>
182&nbsp;
183<P>
184
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186
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190<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
191<B>Constructor Detail</B></FONT></TH>
192</TR>
193</TABLE>
194
195<A NAME="SequenceFileInputFormat()"><!-- --></A><H3>
196SequenceFileInputFormat</H3>
197<PRE>
198public <B>SequenceFileInputFormat</B>()</PRE>
199<DL>
200</DL>
201
202<!-- ============ METHOD DETAIL ========== -->
203
204<A NAME="method_detail"><!-- --></A>
205<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
206<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
207<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
208<B>Method Detail</B></FONT></TH>
209</TR>
210</TABLE>
211
212<A NAME="createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)"><!-- --></A><H3>
213createRecordReader</H3>
214<PRE>
215public <A HREF="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">K</A>,<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">V</A>&gt; <B>createRecordReader</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</A>&nbsp;split,
216                                            <A HREF="../../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="class in org.apache.hadoop.mapreduce">TaskAttemptContext</A>&nbsp;context)
217                                     throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
218<DL>
219<DD><B>Description copied from class: <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html#createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">InputFormat</A></CODE></B></DD>
220<DD>Create a record reader for a given split. The framework will call
221 <A HREF="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html#initialize(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)"><CODE>RecordReader.initialize(InputSplit, TaskAttemptContext)</CODE></A> before
222 the split is used.
223<P>
224<DD><DL>
225<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html#createRecordReader(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">createRecordReader</A></CODE> in class <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="class in org.apache.hadoop.mapreduce">InputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">K</A>,<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">V</A>&gt;</CODE></DL>
226</DD>
227<DD><DL>
228<DT><B>Parameters:</B><DD><CODE>split</CODE> - the split to be read<DD><CODE>context</CODE> - the information about the task
229<DT><B>Returns:</B><DD>a new record reader
230<DT><B>Throws:</B>
231<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE></DL>
232</DD>
233</DL>
234<HR>
235
236<A NAME="getFormatMinSplitSize()"><!-- --></A><H3>
237getFormatMinSplitSize</H3>
238<PRE>
239protected long <B>getFormatMinSplitSize</B>()</PRE>
240<DL>
241<DD><B>Description copied from class: <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getFormatMinSplitSize()">FileInputFormat</A></CODE></B></DD>
242<DD>Get the lower bound on split size imposed by the format.
243<P>
244<DD><DL>
245<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#getFormatMinSplitSize()">getFormatMinSplitSize</A></CODE> in class <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">K</A>,<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">V</A>&gt;</CODE></DL>
246</DD>
247<DD><DL>
248
249<DT><B>Returns:</B><DD>the number of bytes of the minimal split for this format</DL>
250</DD>
251</DL>
252<HR>
253
254<A NAME="listStatus(org.apache.hadoop.mapreduce.JobContext)"><!-- --></A><H3>
255listStatus</H3>
256<PRE>
257protected <A HREF="http://java.sun.com/javase/6/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="../../../../../../org/apache/hadoop/fs/FileStatus.html" title="class in org.apache.hadoop.fs">FileStatus</A>&gt; <B>listStatus</B>(<A HREF="../../../../../../org/apache/hadoop/mapreduce/JobContext.html" title="class in org.apache.hadoop.mapreduce">JobContext</A>&nbsp;job)
258                               throws <A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></PRE>
259<DL>
260<DD><B>Description copied from class: <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#listStatus(org.apache.hadoop.mapreduce.JobContext)">FileInputFormat</A></CODE></B></DD>
261<DD>List input directories.
262 Subclasses may override to, e.g., select only files matching a regular
263 expression.
264<P>
265<DD><DL>
266<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html#listStatus(org.apache.hadoop.mapreduce.JobContext)">listStatus</A></CODE> in class <CODE><A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/FileInputFormat.html" title="class in org.apache.hadoop.mapreduce.lib.input">FileInputFormat</A>&lt;<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">K</A>,<A HREF="../../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">V</A>&gt;</CODE></DL>
267</DD>
268<DD><DL>
269<DT><B>Parameters:</B><DD><CODE>job</CODE> - the job to list input paths for
270<DT><B>Returns:</B><DD>array of FileStatus objects
271<DT><B>Throws:</B>
272<DD><CODE><A HREF="http://java.sun.com/javase/6/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</A></CODE> - if zero items.</DL>
273</DD>
274</DL>
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